package Demo1;

public class Keyboard implements USB{
    @Override
    public void openDevice() {
        System.out.println("插上键盘！");
    }

    public void input(){
        System.out.println("疯狂输入！");
    }

    @Override
    public void closeDevice() {
        System.out.println("关闭键盘！");
    }
}
